Mathematics Curriculum

Transcription

1 2 GRADE Mathematics Curriculum GRADE 2 MODULE 4 Table of Contents GRADE 2 MODULE 4 Addition and Subtraction Within 200 with Word Problems to 100 Module Overview... i Topic A: Sums and Differences Within A.1 Topic B: Strategies for Composing a Ten... 4.B.1 Topic C: Strategies for Decomposing a Ten... 4.C.1 Topic D: Strategies for Composing Tens and Hundreds... 4.D.1 Topic E: Strategies for Decomposing Tens and Hundreds... 4.E.1 Topic F: Student Explanations of Written Methods... 4.F.1 Module Assessments... 4.S.1 Module 4: Addition and Subtraction Within 200 with Word Problems to 100 i

2 Lesson 1 Homework 2 4 Name Date 1. Complete each more or less statement. a. 1 more than 37 is. c. 1 less than 37 is. e. 58 is 10 more than. g. is 10 less than 45. i. 49 is than 50. b. 10 more than 37 is. d. 10 less than 37 is. f. 29 is 1 less than. h. is 1 more than 38. j. 32 is than Complete each pattern and write the rule. a. 44, 45,,, 48 Rule: b. 44,, 24,, 4 Rule: c. 44,,, 74, 84 Rule: d., 43, 42,, 40 Rule: e.,, 44, 34, Rule: f. 41,,, 38, 37 Rule: Lesson 1: Relate 1 more, 1 less, 10 more, and 10 less to addition and subtraction of 1 and 10. 3

3 Lesson 1 Homework Label each statement as true or false. a. 1 more than 36 is the same as 1 less than 38. b. 10 less than 47 is the same as 1 more than 35. c. 10 less than 89 is the same as 1 less than 90. d. 10 more than 41 is the same as 1 less than Below is a chart of balloons at the county fair. Color of Balloons Number of Balloons Red 59 Yellow 61 Green 65 Blue Pink a. Use the following to complete the chart and answer the question. The fair has 1 more blue than red balloons. There are 10 fewer pink than yellow balloons. Are there more blue or pink balloons? b. If 1 red balloon pops and 10 red balloons fly away, how many red balloons are left? Use the arrow way to show your work. Lesson 1: Relate 1 more, 1 less, 10 more, and 10 less to addition and subtraction of 1 and 10. 4

4 Lesson 2 Homework 2 4 Name Date 1. Solve using place value strategies. Use scrap paper to show the arrow way or number bonds, or just use mental math and record your answers. a. 2 tens + 3 tens = tens = b. 5 tens + 4 tens = tens = 2 tens 4 ones + 3 tens = tens ones = 5 tens 9 ones + 4 tens = tens ones = c = = = d = = = e = = = 87 f = = = Find each sum. Then use >, <, or = to compare. a d b e c f Lesson 2: Add and subtract multiples of 10 including counting on to subtract 8

5 Lesson 2 Homework Solve using place value strategies. a. 6 tens 2 tens = tens = b. 8 tens 5 tens = tens = 6 tens 3 ones 3 tens = tens ones = 8 tens 9 ones 5 tens = tens ones = c = = = d. 72 = = = 28 e. 67 = = = Complete each more than or less than statement. a. 20 less than 58 is. b. 36 more than 40 is. c. 40 less than is 28. d. 50 more than is There were 68 plates in the sink at the end of the day. There were 40 plates in the sink at the beginning of the day. How many plates were added throughout the day? Use the arrow way to show your simplifying strategy. Lesson 2: Add and subtract multiples of 10 including counting on to subtract 9

6 Lesson 3 Homework 2 4 Name Date 1. Solve using the arrow way. The first set is done for you. a = 87 b = = = = = c = d = = = = = Lesson 3: Add and subtract multiples of 10 and some ones within

7 Lesson 3 Homework Solve using the arrow way, number bonds, or mental math. Use scrap paper if needed. a = b = c = = = = = = = d = e = f = = = = = = = 3. Marcy had $84 in the bank. She took $39 out of her account. How much does she have in her account now? 4. Brian has 92 cm of rope. He cuts off a piece 49 cm long to tie a package. a. How much rope does Brian have left? b. To tie a different package, Brian needs another piece of rope that is 8 cm shorter than the piece he just cut. Does he have enough rope left? Lesson 3: Add and subtract multiples of 10 and some ones within

8 Lesson 4 Homework 2 4 Name Date 1. Solve. Draw and label a tape diagram to subtract 10, 20, 30, 40, etc. a = = ? b = = c = = d = = Lesson 4: Add and subtract multiples of 10 and some ones within

9 Lesson 4 Homework Solve. Draw a number bond to add 10, 20, 30, 40, etc. a = = /\ 2 41 b = = c = = d = = 3. Kylie has 28 more oranges than Cynthia. Kylie has 63 oranges. How many oranges does Cynthia have? Draw a tape diagram or number bond to solve. Lesson 4: Add and subtract multiples of 10 and some ones within

10 Lesson 5 Homework 2 4 Name Date Solve and show your strategy markers were in the bin. Chase added the 43 markers that were on the floor to the bin. How many markers are in the bin now? 2. There are 29 fewer big stickers on the sticker sheet than little stickers. There are 62 little stickers on the sheet. How many big stickers are there? 3. Rose has 34 photos in a photo album and 41 photos in a box. How many photos does Rose have? Lesson 5: Solve one- and two-step word problems within 100 using strategies based on place value. 20

11 Lesson 5 Homework Halle has two ribbons. The blue ribbon is 58 cm. The green ribbon is 38 cm longer than the blue ribbon. a. How long is the green ribbon? b. Halle uses 67 cm of green ribbon to wrap a present. How much green ribbon is left? 5. Chad bought a shirt for $19 and a pair of shoes for $28 more than the shirt. a. How much was the pair of shoes? b. How much money did Chad spend on the shirt and shoes? c. If Chad had $13 left over, how much money did Chad have before buying the shirt and shoes? Lesson 5: Solve one- and two-step word problems within 100 using strategies based on place value. 21

12 Lesson 6 Homework 2 4 Name Date 1. Solve using mental math, if you can. Use your place value chart and place value disks to solve those you cannot do mentally. a = = = = b = = = = 2. Solve the following problems using your place value chart and place value disks. Compose a ten, if needed. Think about which ones you can solve mentally, too! a = = b = = c = = d = = e = = f = = g = = h = = i = = Lesson 6: Use manipulatives to represent the composition of 10 ones as 1 ten with two-digit addends. 24

13 Lesson 6 Homework 2 4 Solve using a place value chart. 3. Melissa has 36 more crayons than her brother. Her brother has 49 crayons. How many crayons does Melissa have? 4. There were 67 candles on Grandma s birthday cake and 26 left in the box. How many candles were there in all? 5. Frank s mother gave him $25 to save. If he already had $38 saved, how much money does Frank have saved now? Lesson 6: Use manipulatives to represent the composition of 10 ones as 1 ten with two-digit addends. 25

14 Lesson 7 Homework 2 4 Name Date 1. Solve the following problems using the vertical form, your place value chart, and place value disks. Bundle a ten, if needed. Think about which ones you can solve mentally, too! a b c Add the bottom numbers to find the missing number above it Lesson 7: Relate addition using manipulatives to a written vertical method. 29

15 Lesson 7 Homework Jahsir counted 63 flowers by the door and 28 flowers on the windowsill. How many flowers were by the door and on the windowsill? 4. Antonio s string is 38 centimeters longer than his reading book. The length of his reading book is 26 centimeters. a. What is the length of Antonio s string? b. The length of Antonio s reading book is 20 centimeters shorter than the length of his desk. How long is Antonio s desk? Lesson 7: Relate addition using manipulatives to a written vertical method. 30

16 Lesson 8 Homework 2 4 Name Date 1. Solve vertically. Draw and bundle place value disks on the place value chart. a = b = c = d = Lesson 8: Use math drawings to represent the composition and relate drawings to a written method. 33

17 Lesson 8 Homework 2 4 e = 2. Twenty-eight second-grade students went on a field trip to the zoo. The other 24 second-grade students stayed at school. How many second grade students are there? 3. Alice cut a 27 cm piece of ribbon and had 39 cm of ribbon left over. How much ribbon did Alice have at first? Lesson 8: Use math drawings to represent the composition and relate drawings to a written method. 34

18 Lesson 9 Homework 2 4 Name Date 1. Solve using the algorithm. Draw and bundle chips on the place value chart. a = hundreds tens ones b = hundreds tens ones c = hundreds tens ones Lesson 9: Use math drawings to represent the composition when adding a two-digit to a three digit addend 37

19 Lesson 9 Homework Solve using the algorithm. Write a number sentence for the problem modeled on the place value chart. hundreds tens ones 3. Jane made 48 lemon bars and 23 cookies. a. How many lemon bars and cookies did Jane make? hundreds tens ones b. Jane made 19 more lemon bars. How many lemon bars does she have? hundreds tens ones Lesson 9: Use math drawings to represent the composition when adding a two-digit to a three digit addend 38

20 Lesson 10 Homework 2 4 Name Date 1. Solve using the algorithm. Draw chips and bundle when you can. a = hundreds tens ones b = hundreds tens ones c = hundreds tens ones d = hundreds tens ones Lesson 10: Use math drawings to represent the composition when adding a two-digit to a three digit addend. 41

21 Lesson 10 Homework Jamie started to solve this problem when she accidently dropped paint on her sheet. Can you figure out what problem she was given and her answer by looking at her work? = + = hundreds tens ones 3. a. In the morning, Mateo borrowed 4 bundles of ten markers and 17 loose markers from the art teacher. How many markers did Mateo borrow? hundreds tens ones b. In the afternoon, Mateo borrowed 2 bundles of ten crayons and 15 loose crayons. How many markers and crayons did Mateo borrow in all? hundreds tens ones Lesson 10: Use math drawings to represent the composition when adding a two-digit to a three digit addend. 42

22 Lesson 11 Homework 2 4 Name Date 1. Solve using mental math. a. 6 5 = 26 5 = 26 6 = 26 7 = b. 8 7 = 58 7 = 58 8 = 58 9 = 2. Solve using your place value chart and place value disks. Unbundle a ten, if needed. Think about which problems you can solve mentally, too! a = 36 7 = b = 37 8 = c = 41 5 = d = = e = = f = = Lesson 11: Represent subtraction with and without the decomposition of 1 ten as 10 ones with manipulatives. 45

23 Lesson 11 Homework Solve, and explain your strategy. a = b = 4. The number of marbles in each jar is marked on the front. Miss Clark took 37 marbles out of each jar. How many marbles are left in each jar? Complete the number sentence to find out a. = b. = c. = d. = Lesson 11: Represent subtraction with and without the decomposition of 1 ten as 10 ones with manipulatives. 46

24 Lesson 12 Homework 2 4 Name Date 1. Use place value disks to solve each problem. Rewrite the problem vertically, and record each step as shown in the example. a b c d e f Lesson 12: Relate manipulative representations to a written method. 49

25 Lesson 12 Homework Some first- and second-grade students voted on their favorite drink. The table shows the number of votes for each drink. Types of Drink Number of Votes Milk 28 Apple Juice 19 Grape Juice 16 Fruit Punch 37 Orange Juice 44 a. How many more students voted for fruit punch than for milk? Show your work. b. How many more students voted for orange juice than for grape juice? Show your work. c. How many fewer students voted for apple juice than for milk? Show your work. Lesson 12: Relate manipulative representations to a written method. 50

26 Lesson 13 Homework 2 4 Name Date 1. Solve vertically. Use the place value chart and chips to model each problem. Show how you change 1 ten for 10 ones, when necessary. The first one has been started for you. a = b = c = Lesson 13: Use math drawings to represent subtraction with and without decomposition and relate drawings to a written method 51

27 Lesson 13 Homework Solve vertically. Draw a place value chart and chips to model each problem. Show how you change 1 ten for 10 ones, when necessary. a = b = c = d = e = f = Lesson 13: Use math drawings to represent subtraction with and without decomposition and relate drawings to a written method 54

28 Lesson 14 Homework 2 4 Name Date 1. Solve by writing the problem vertically. Check your result by drawing chips on the place value chart. Change 1 ten for 10 ones, when needed. a = hundreds tens ones b = hundreds tens ones c = hundreds tens ones Lesson 14: Represent subtraction with and without the decomposition when there is a three-digit minuend 57

29 Lesson 14 Homework Solve the following problems without a place value chart. a. b Solve and show your work. Draw a place value chart and chips, if needed. a. Aniyah has 165 seashells. She has 28 more than Ralph. How many seashells does Ralph have? b. Aniyah and Ralph each give 19 seashells to Harold. How many seashells does Aniyah have left? How many seashells does Ralph have left? Lesson 14: Represent subtraction with and without the decomposition when there is a three-digit minuend 58

30 Lesson 15 Homework 2 4 Name Date 1. Solve each problem using vertical form. Show the subtraction on the place value chart with chips. Exchange 1 ten for 10 ones, when necessary. a hundreds tens ones b hundreds tens ones c hundreds tens ones Lesson 15: Represent subtraction with and without the decomposition when there is a three-digit minuend 61

31 Lesson 15 Homework 2 4 d hundreds tens ones 2. Lisa solved vertically and on her place value chart. Explain what Lisa did correctly and what she needs to fix. a. Lisa correctly b. Lisa needs to fix Lesson 15: Represent subtraction with and without the decomposition when there is a three-digit minuend 62

32 Lesson 16 Homework 2 4 Name Date Solve the following word problems. Use the RDW process. 1. Vicki modeled the following problem with a tape diagram. Eighty-two students are in the math club. 35 students are in the science club. How many more students are in the math club than science club? Show another model to solve the problem. Write your answer in a sentence. Lesson 16: Solve one- and two-step word problems within 100 using strategies based on place value. 65

33 Lesson 16 Homework Forty-six birds sat on a wire. Some flew away, but 29 stayed. How many birds flew away? Show your work. 3. Ian bought a pack of 47 water balloons. 19 were red, 16 were yellow, and the rest were blue. How many water balloons were blue? Show your work. 4. Daniel read 54 pages of his book in the morning. He read 27 fewer pages in the afternoon. How many pages did Daniel read altogether? Show your work. Lesson 16: Solve one- and two-step word problems within 100 using strategies based on place value. 66

34 Lesson 17 Homework 2 4 Name Date 1. Solve mentally. a. 4 ones + = 1 ten 4 + = 10 4 tens + = 1 hundred 40 + = 100 b. 1 ten = + 7 ones 10 = hundred = + 7 tens 100 = + 70 c. 1 ten more than 9 ones = = 1 hundred more than 9 ones = = 1 hundred more than 9 tens = = d. 2 ones + 8 ones = ten = 2 tens + 8 tens = hundred = e. 5 ones + 6 ones = ten(s) one(s) = 5 tens + 6 tens = hundred(s) ten(s) = f. 14 ones + 4 ones = ten(s) one(s) = 14 tens + 4 tens = hundred(s) tens(s) = Lesson 17: Use mental strategies to relate compositions of 10 tens as 1 hundred to 10 ones as 1 ten. 69

35 Lesson 17 Homework Solve. a. 6 ones + 5 ones = ten one = 6 tens + 5 tens = hundred ten = b. 5 ones + 7 ones = ten ones = 5 tens + 7 tens = hundred tens = c. 9 ones + 8 ones = ten ones = 9 tens + 8 tens = hundred tens = 3. Fill in the blanks. Then, complete the addition sentence. The first one is done for you a b = = c = d = Lesson 17: Use mental strategies to relate compositions of 10 tens as 1 hundred to 10 ones as 1 ten. 70

36 Lesson 18 Homework 2 4 Name Date 1. Solve using your place value chart and place value disks. a = = b = = c = = d = = e = = 2. Circle the statements that are true as you solve each problem using place value disks. a b I change 10 ones for 1 ten. I change 10 tens for 1 hundred. The total of the two parts is 109. The total of the two parts is 119. I change 10 ones for 1 ten. I change 10 tens for 1 hundred. The total of the two parts is 163. The total of the two parts is 173. Lesson 18: Use manipulatives to represent additions with two compositions. 73

37 Lesson 18 Homework Solve the problem using your place value disks, and fill in the missing total. Then, write an addition sentence that relates to the number bonds. a. b Addition Sentence: Addition Sentence: 4. Solve using your place value chart and place value disks. a = b = c = Lesson 18: Use manipulatives to represent additions with two compositions. 74

38 Lesson 19 Homework 2 4 Name Date 1. Solve the following problems using the vertical form, your place value chart, and place value disks. Bundle a ten or hundred, if needed. a b c d e f Lesson 19: Relate manipulative representations to a written method. 78

39 Lesson 19 Homework 2 4 g h Seventy-four trees were planted in the garden. Forty-nine more bushes were planted than trees in the garden. a. How many bushes were planted? b. How many trees and bushes were planted? Lesson 19: Relate manipulative representations to a written method. 79

40 Lesson 20 Homework 2 4 Name Date 1. Solve vertically. Draw chips on the place value chart and bundle, when needed. a = 100 s 10 s 1 s b = 100 s 10 s 1 s c = 100 s 10 s 1 s Lesson 20: Use math drawings to represent additions with up to two compositions and relate drawings to a written method. 92

41 Lesson 20 Homework 2 4 d = 100 s 10 s 1 s e = 100 s 10 s 1 s 2. For each box, find and circle two numbers that add up to 150. a b c Lesson 20: Use math drawings to represent additions with up to two compositions and relate drawings to a written method. 93

42 Lesson 21 Homework 2 4 Name Date 1. Solve vertically. Draw chips on the place value chart and bundle, when needed. a = 100 s 10 s 1 s b = 100 s 10 s 1 s c = 100 s 10 s 1 s Lesson 21: Use math drawings to represent additions with up to two compositions and relate drawings to a written method 96

43 Lesson 21 Homework 2 4 d = 100 s 10 s 1 s 2. The blue team scored 37 fewer points than the white team. The blue team scored 69 points. a. How many points did the white team score? b. How many points did the blue and white teams score altogether? Lesson 21: Use math drawings to represent additions with up to two compositions and relate drawings to a written method 97

44 Lesson 22 Homework 2 4 Name Date 1. Look to make 10 ones or 10 tens to solve the following problems using place value strategies. a = = = b = = = c = = = Lesson 22: Solve additions with up to four addends with totals within 200 with and without two compositions of larger units. 100

45 Lesson 22 Homework The table shows the top six soccer teams and their total points scored this season. Teams Points Red 29 Yellow 38 Green 41 Blue 76 Orange 52 Black 24 a. How many points did the yellow and orange teams score together? b. How many points did the yellow, orange, and blue teams score together? c. How many points did the red, green, and black teams score together? d. Which two teams scored a total of 70 points? e. Which two teams scored a total of 100 points? Lesson 22: Solve additions with up to four addends with totals within 200 with and without two compositions of larger units. 101

46 Lesson 23 Homework 2 4 Name Date 1. Solve using number bonds to subtract from 100. The first one has been done for you. a = 15 b = = 15 c d e f Lesson 23: Use number bonds to break apart three-digit minuends and subtract from the hundred. 104

47 Lesson 23 Homework 2 4 g h Monica incorrectly solved to get 102. Show her how to solve it correctly. Monica s work: Correct way to solve : 3. Billy sold 50 fewer magazines than Alex. Alex sold 128 magazines. How many magazines did Billy sell? Solve using a number bond. Lesson 23: Use number bonds to break apart three-digit minuends and subtract from the hundred. 105

48 Lesson 24 Homework 2 4 Name Date 1. Solve using mental math. If you cannot solve mentally, use your place value chart and place value disks. a = 38 9 = = = b = = = 2. Solve using your place value chart and place value disks. Unbundle the hundred or ten when necessary. Circle what you did to model each problem. a = b = I unbundled the hundred. Yes No I unbundled a ten. Yes No c = I unbundled the hundred. Yes No I unbundled a ten. Yes No d = I unbundled the hundred. I unbundled a ten. Yes No Yes No I unbundled the hundred. I unbundled a ten. Yes No Yes No e = f = I unbundled the hundred. I unbundled a ten. Yes No Yes No I unbundled the hundred. I unbundled a ten. Yes No Yes No Lesson 24: Use manipulatives to represent subtraction with decompositions of 1 hundred as 10 tens and 1 ten as 10 ones. 108

49 Lesson 24 Homework 2 4 g = h = I unbundled the hundred. Yes No I unbundled a ten. Yes No i = I unbundled the hundred. Yes No I unbundled a ten. Yes No j = I unbundled the hundred. Yes No I unbundled a ten. Yes No k = I unbundled the hundred. Yes No I unbundled a ten. Yes No l = I unbundled the hundred. I unbundled a ten. Yes No Yes No I unbundled the hundred. I unbundled a ten. Yes No Yes No crayons in the basket are broken. The basket has 182 crayons. How many crayons are not broken? Lesson 24: Use manipulatives to represent subtraction with decompositions of 1 hundred as 10 tens and 1 ten as 10 ones. 109

50 Lesson 25 Homework 2 4 Name Date 1. Solve the following problems using the vertical form, your place value chart, and place value disks. Unbundle a ten or hundred when necessary. Show your work for each problem. a b c d e f g h Lesson 25: Relate manipulative representations to a written method. 124

51 Lesson 25 Homework Dominic has $167. He has $88 more than Mario. How much money does Mario have? 3. Which problem will have the same answer as ? Show your work. a b c d Lesson 25: Relate manipulative representations to a written method. 125

52 Lesson 26 Homework 2 4 Name Date 1. Solve vertically. Draw chips on the place value chart. Unbundle when needed. a = hundreds tens ones b = hundreds tens ones c = hundreds tens ones Lesson 26: Use math drawings to represent subtraction with up to two decompositions and relate drawings to a written method 128

53 Lesson 26 Homework 2 4 d = hundreds tens ones e = hundreds tens ones 2. Extension: Fill in the missing number to complete the problem. Draw a place value chart and chips to model Lesson 26: Use math drawings to represent subtraction with up to two decompositions and relate drawings to a written method 129

54 Lesson 27 Homework 2 4 Name Date 1. Solve vertically. Draw chips on the place value chart. Unbundle when needed. a = hundreds tens ones b = hundreds tens ones c = hundreds tens ones Lesson 27: Subtract from 200 and from numbers with zeros in the tens place. 132

55 Lesson 27 Homework 2 4 d = hundreds tens ones e = hundreds tens ones 2. Susan solved and decided to add her answer to 91 to check her work. Explain why this strategy works. Susan s work: Explanation: Lesson 27: Subtract from 200 and from numbers with zeros in the tens place. 133

56 Lesson 28 Homework 2 4 Name Date 1. Solve vertically. Draw chips on the place value chart. Unbundle when needed. a = hundreds tens ones b = hundreds tens ones c = hundreds tens ones Lesson 28: Subtract from 200 and from numbers with zeros in the tens place. 136

57 Lesson 28 Homework 2 4 d = hundreds tens ones e = hundreds tens ones 2. Herman collected 200 shells on the beach. Of those, he kept 136 shells and left the rest on the beach. How many shells did he leave on the beach? Lesson 28: Subtract from 200 and from numbers with zeros in the tens place. 137

58 Lesson 29 Homework 2 4 Name Date 1. Add like units and record the totals below. a b c d Lesson 29: Use and explain the totals below written method using words, math drawings, and numbers. 140

59 Lesson 29 Homework 2 4 e. 147 f g. 188 h Daniel counted 67 apples on one tree and 79 apples on another tree. How many apples were on both trees? Add like units and record the totals below to solve. Lesson 29: Use and explain the totals below written method using words, math drawings, and numbers. 141

60 Lesson 30 Homework 2 4 Name Date 1. Kari and Marty solved Kari s work: Marty s work: Explain what is different about how Kari and Marty solved the problem. Lesson 30: Compare totals below to new groups below as written methods. 144

61 Lesson 30 Homework Here is one way to solve For (a), solve another way. a b. Explain how the two ways to solve are similar. 3. Show another way to solve Lesson 30: Compare totals below to new groups below as written methods. 145

62 Lesson 31 Homework 2 4 Name Date 1. Melissa had 56 pens and 37 more pencils than pens. a. How many pencils did Melissa have? b. How many pens and pencils did Melissa have? 2. Antonio gave 27 tomatoes to his neighbor and 15 to his brother. He had 72 tomatoes before giving some away. How many tomatoes does Antonio have left? Lesson 31: Solve two-step word problems within

63 Lesson 31 Homework The bakery made 92 muffins. Seventeen were blueberry, 23 were cranberry, and the rest were chocolate chip. How many chocolate chip muffins did the bakery make? 4. After spending $43 on groceries and $19 on a book, Mrs. Groom had $16 left. How much money did Mrs. Groom have to begin with? Lesson 31: Solve two-step word problems within